/*
 * @Description: 
 * @Author: liuzl
 * @Date: 2024-09-24 17:12:49
 * @LastEditors: liuzl
 * @LastEditTime: 2024-09-24 17:32:46
 */
/**
 * Shape
 */
public abstract class Shape {
    private String color;
    public Shape(){}
    public Shape(String color){
        this.color = color;
    }
    public String getColor(){
        return color;
    }
    public abstract double area();
    
}